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Finding the Fourth Proportional to 18,746.08, 25,863.04 and 12,031.20

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Solution

The fourth proportional to 18,746.08, 25,863.04 and 12,031.20 is: 16,598.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,746.08 : 25,863.04 = 12,031.20 : x
  2. Step 2: Convert to fraction form
    18,746.08/25,863.04 = 12,031.20/x
  3. Step 3: Cross multiply
    18,746.08x = 25,863.04 × 12,031.20
  4. Step 4: Simplify right side
    18,746.08x = 311,163,406.85
  5. Step 5: Solve for x
    x = 311,163,406.85/18,746.08
  6. Step 6: Final answer
    x = 16,598.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.